In Master Saran Singh's book " The Encyclopaedia of THE COINS OF MALAYSIA SINGAPORE AND BRUNEI 1400-1967", this Kupang was coded as SS56. This Patani-Kelantan Gold Bull/Kijang Kupang facing to the right was graded as RRR in rarity and is classified as an extremely rare item.

I was told by a senior collector of Malay State Sultanate Coinage, this is a "must" piece to be collected by a serious collector of Malay State Sultanate Gold Kupang. He told me, so far he had seen around 12 pieces of this rare SS56 Patani-Kelantan Gold Bull/Kijang Kupang facing to the right. Mostly are in serious collector's custody!

Obverse : A humped bull/Kijang (Barking Deer) facing to the right with the tail pointing down. A crescent moon and sun above the Kijang.